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SubjectRe: reducing stack usage in v4l?
On Tue, 2003-03-11 at 09:19, Gerd Knorr wrote

> That is wrong, at least the 2k memset/call mentioned by Andrew. There
> are lots of memset() calls, but they all are within the case switches
> for the ioctls and zero out only the structs which are used in that code
> path, so it is actually much smaller (~50 -> ~300 bytes maybe, depending
> on the ioctl).

gcc sometimes does things like allocate all the objects in case
statements at entry time. I assume its a performance win to do so.


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